feat: adds lesson_13 homework and lesson_14 pre-work (code-differently#469)

Signed-off-by: Anthony D. Mays <[email protected]>

Author: anthonydmays

lesson_13/README.md

@@ -9,4 +9,9 @@ Please review the following resources before lecture:
 
 ## Homework
 
-- TODO(anthonydmays): Add additional details when ready.
+- [ ] Implement the `findPermutationDifference` method in [Lesson13.java](./maps_java/maps_app/src/main/java/com/codedifferently/lesson13/Lesson13.java).
+- [ ] Do pre-work for [lesson 14](/lesson_14/).
+
+## Extra Credit
+
+- [ ] Implement the TypeScript version in [lesson13.ts](./maps_ts/src/lesson13.ts).

lesson_13/maps_java/.gitattributes

@@ -0,0 +1,9 @@
+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+

lesson_13/maps_java/.gitignore

@@ -0,0 +1,5 @@
+# Ignore Gradle project-specific cache directory
+.gradle
+
+# Ignore Gradle build output directory
+build

lesson_13/maps_java/gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists